Clearly not as good as the original, but a million times better than the third.
There is an oil spill in the hunting grounds of the Killer Wales and Jesse, Nadine and Elvis, Jesse's new-found half brother must do all they can to get Willy, Luna and little Spot to safety (nice little bit of echoing between humans and whales). Randolph is as always amazing as the native american healer, as are the other lead actors.
But the reason I adore this film is because of the whales and the music by Basil Poledouris. The footage of the whales hunting and singing combined with the haunting melodies makes this one of my favourite childhood films, despite it not having princesses or talking animals or explosions. In many ways it was years ahead of itself with regards to environmental message, and has an effect of making children think in a way which modern films can't quite seem to grasp.